Gree ACs Hisense factory ACs Zaqzouq ACs All are energy saving, R410 freon Seven years warranty, five years compressor, two years comprehensive Basic size 18, difference 850 Fischer size 18, difference 850 Double W-Box size 18, difference 850 Kilon size 18, difference 850 Gree AC size 18, take the old one and the difference is 1150 Includes free delivery and installation within Mecca